LG U370 Manuals

Manuals and User Guides for LG U370. We have 2 LG U370 manuals available for free PDF download: Service Manual, User Manual

LG U370 Service Manual

LG U370 Service Manual (179 pages)

Brand: LG | Category: Cell Phone | Size: 8.41 MB
Table of contents
Table Of Contents2................................................................................................................................................................
Only For Training And Service Purposes3................................................................................................................................................................
Introduction4................................................................................................................................................................
Purpose4................................................................................................................................................................
Regulatory Information4................................................................................................................................................................
Performance6................................................................................................................................................................
System Overview6................................................................................................................................................................
Usable Environment7................................................................................................................................................................
Radio Performance7................................................................................................................................................................
Current Consumption13................................................................................................................................................................
Rssi Bar13................................................................................................................................................................
Battery Bar14................................................................................................................................................................
Sound Pressure Level15................................................................................................................................................................
Charging15................................................................................................................................................................
Technical Brief16................................................................................................................................................................
General Description16................................................................................................................................................................
Gsm Mode18................................................................................................................................................................
Umts Mode22................................................................................................................................................................
Lo Generation And Distribution Circuits24................................................................................................................................................................
Off-chip Rf Components24................................................................................................................................................................
Digital Baseband(dbb/msm6245)33................................................................................................................................................................
Subsystem(msm6245)36................................................................................................................................................................
Power Block44................................................................................................................................................................
External Memory Interface49................................................................................................................................................................
H/w Sub System51................................................................................................................................................................
Main Features65................................................................................................................................................................
Trouble Shooting70................................................................................................................................................................
Rf Component70................................................................................................................................................................
Signal Path_umts Rf73................................................................................................................................................................
Signal Path_gsm Rf74................................................................................................................................................................
Checking Vc-tcxo Block75................................................................................................................................................................
Checking Front-end Module Block77................................................................................................................................................................
Checking Umts Block79................................................................................................................................................................
Checking Bluetooth Block84................................................................................................................................................................
Power On Troubleshooting86................................................................................................................................................................
Charger Troubleshooting89................................................................................................................................................................
Usb Troubleshooting91................................................................................................................................................................
Sim Detect Troubleshooting92................................................................................................................................................................
Camera Troubleshooting95................................................................................................................................................................
Lcd Module Troubleshooting98................................................................................................................................................................
Receiver Path100................................................................................................................................................................
Headset Path102................................................................................................................................................................
Speaker Phone Path104................................................................................................................................................................
Main Microphone106................................................................................................................................................................
Headset Microphone108................................................................................................................................................................
Download110................................................................................................................................................................
Downloading Procedure110................................................................................................................................................................
Connecting To Pc111................................................................................................................................................................
Troubleshooting Download Errors123................................................................................................................................................................
Caution128................................................................................................................................................................
Block Diagram129................................................................................................................................................................
Gsm & Umts Rf Block129................................................................................................................................................................
Interface Diagram131................................................................................................................................................................
Memory Interface132................................................................................................................................................................
Top Side135................................................................................................................................................................
Bottom Side136................................................................................................................................................................
Circuit Diagram138................................................................................................................................................................
Bga Ic Pin Map144................................................................................................................................................................
Pcb Layout148................................................................................................................................................................
Calibration & Rf Auto Test Program (hot Kimchi)154................................................................................................................................................................
Configuration Of Hot Kimchi154................................................................................................................................................................
How To Use Hot Kimchi157................................................................................................................................................................
Exploded View & Replacement Part List160................................................................................................................................................................
Exploded View160................................................................................................................................................................
Replacement Parts162................................................................................................................................................................
Mechanic Component162................................................................................................................................................................
Main Component164................................................................................................................................................................
Accessory177................................................................................................................................................................

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LG U370 User Manual

LG U370 User Manual (129 pages)

Brand: LG | Category: Handsets | Size: 3.8 MB

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